Page or stub clamp.



J. P. KNOWLES.

PAGE 03 STUB CLAMP.

APPLICATION FILED APR.1B, 1912.

1,067,927, Patentd July 22, 1913.

WITED %TATE% PATENT UFFICE.

JOHN E. KNOWLES, OF ST. PAUL, MINNESOTA.

PAGE OR STUIB CLAMP.

Application filed April 18, 1912.

To all whom it may concern:

Be it known that I, JOHN P. KNowLEs, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented a new and useful Improvement in Page or Stub Clamps, ofwhich the following is a specification.

My invention has for its object the production of a device which isadapted to hold the stubs or pages of a book so that the book can beeasily opened at the desired place. Such a device is particularlyalthough not exclusively useful upon account books, journals and checkbooks.

In the accompanying drawing forming part of this specification, Figure 1is a perspective view of my invention; Fig. 2 is a side elevation andFig. 3 is a perspective of an account book showing my device appliedthereto.

In constructing my clamp it is stamped or formed from a single piece ofmaterial although it can be made in such manner as may be mostconvenient and inexpensive and which will be familiar to those skilledin the art to which the invention relates.

A represents the body of the device which is formed with a lower side 2and a pair of upper lips 3 forming a side lying parallel with said side2 and connected thereto by a web t thus forming a channel which isadapted to fit over an edge of the back cover of the book. The lips 3are provided with thumb-set screws 5 threaded downwardly therethroughand terminating in sharp points which are adapted to impinge upon theinside of the back cover to hold the clamp firmly in place. Projectingupwardly from the web between the lips is a projection 6 which is bentat substantially right angles to the web forming an arm 7 of greaterlength than the lips and side 2 lying in a plane substantially parallelwith the plane of said side 2. This arm is adapted to eX- tend over thepages of the book as illustrated in Fig. 3 and its end is provided witha downwardly extending set screw 8. This screw is threaded through thearm and formed with a flat point which is adapted to impinge upon thepages to hold the leaves in position against the back cover of the book.

Specification of Letters Patent.

Patented July 22,1913.

Serial No. 691,727.

In use the body is slipped over the back cover 9 of the book asillustrated in Fig. 3 with the outer edge of the cover resting againstthe web 4: between the side 2 and lips 3. The set screws 5 are then setfirmly into the cover. The leaves 10 which it is desired to hold inplace are then slipped between the lips 3 and arm 7, and the set screw 8is set down firmly upon the leaves to prevent them from opening awayfrom the back cover. To release the leaves loosen setscrew 8.

The screws 5 assume a position beyond the edges of the leaves when theclamp is in use and the device is not bulky but flat and thin andoccupies very small space not bulging the book when the latter isclosed.

In accordance with the patent statutes I have described the principlesof operation of my invention together with the apparatus which I nowconsider to represent the best embodiment thereof but I desire to haveit understood that the construction shown is only illustrative and thatthe invention can be carried out by other means and applied to usesother than those above set forth within the scope of the followingclaim.

Having described my invention, what I claim as new and desire to protectby Letters Patent is A stub or page clamp, consisting of a rigid channelshaped member adapted to fit over the edge of the cover of a book,adjustable fastening means on one side of said member adapted to impingeagainst said cover to secure said clamp thereon, said member beingprovided with a rigid arm projecting up and offset to lie parallel withthe sides of said channel member and eX- tend over the leaves of thebook, and adjustable means on the outer end of said arm adapted toimpinge against the leaves of said book to hold the same against saidcover.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN P. KNOWLES. Witnesses:

G. M. DnEBAoH, F. G. BRADBURY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

